Any guidelines on the number of region servers in HBase cluster?

["S. Zhou" <my...@yahoo.com>]

I am new to HBase. I am trying to check if a user is able to configure the number of region servers (not #regions) in a HBase cluster. If yes, any guidelines on the number of region servers?

Thanks
Senqiang

Re: Any guidelines on the number of region servers in HBase cluster?

[lars hofhansl <la...@apache.org>]

If you do not mind the plug... This blog post might help:
http://hadoop-hbase.blogspot.com/2013/01/hbase-region-server-memory-sizing.html


-- Lars


----- Original Message -----
From: S. Zhou <my...@yahoo.com>
To: "user@hbase.apache.org" <us...@hbase.apache.org>
Cc: 
Sent: Wednesday, September 25, 2013 9:57 AM
Subject: Any guidelines on the number of region servers in HBase cluster?

I am new to HBase. I am trying to check if a user is able to configure the number of region servers (not #regions) in a HBase cluster. If yes, any guidelines on the number of region servers?

Thanks
Senqiang 

Re: Any guidelines on the number of region servers in HBase cluster?

[Geovanie Marquez <ge...@gmail.com>]

hbase-site.xml -> hbase.hregion.max.filesize


governs the size of the individual region servers. Once it exceed this size
it splits.

G

Re: Any guidelines on the number of region servers in HBase cluster?

[Jean-Marc Spaggiari <je...@spaggiari.org>]

Hi Senqiang,

I will say, it depend of the size of the data. Let's say you want to keep
about 100 regions per servers, and you have a 5TB table. With 10GB per
regions, that's 512 regions, so something close to 5RS can handle that
correctly. I guess that's a good starting point for your calculation.

JM


2013/9/25 S. Zhou <my...@yahoo.com>

> I am new to HBase. I am trying to check if a user is able to configure the
> number of region servers (not #regions) in a HBase cluster. If yes, any
> guidelines on the number of region servers?
>
> Thanks
> Senqiang